Alkynyltellurolato ligands including a solvatochromic rhenium(i) complex
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Burt, Liam K.
Kirk, Ryan M.
Hill, Anthony F.
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Alkynyltellurolato complexes LnM-Te-C = CR (LnM = CpFe(CO)2, CpFe(CO)(PPh3), Re(CO)3(bipy); R = Ph, SiMe3) arise via tellurium insertion into alkynyllithiums followed by metathesis with the corresponding metal halide complex. The rhenium(i) complex displays solvatochromism (hypsochromic shift in polar solvents) for the inter-ligand (TeC CR to bipy) charge transfer which is not, however, observed for the lighter analogue [Re(SeC CSiMe3)(CO)3(bipy)].
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Chemical Communications
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